Non-interfering breaker system for delayed crosslinked fracturin

Details Non-interfering breaker system for delayed crosslinked fracturin Non-interfering breaker system for delayed crosslinked fracturin

1990-02-05

1990-11-13

Suchfield, George A.

Wells

Processes

Chemical inter-reaction of two or more introduced materials

166308, 252 8551, E21B 4326

Patent

active

049695266

ABSTRACT:
A tertiary amine hydrochloride/persulfate breaker system as disclosed which effects complete breaks of polysaacharide-based gels or fluids in a the ambient temperature range without interfering with delayed crosslink mechanism in the fracturing fluid. The use of tertiary amine hydrochloride avoids an immediate shift in pH which would counteract means employed to effect a delayed crosslink mechanism.

REFERENCES:
patent: 3779914 (1973-12-01), Nimerick
patent: 3974077 (1976-08-01), Free
patent: 4250044 (1981-02-01), Hinkel
patent: 4463810 (1984-08-01), Hill
patent: 4780223 (1988-10-01), Baranet et al.

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